Top "Angular-validation" questions

Angular 2+ validation patterns, syntax and properties.

Angular2 - FormControl Validation on blur

I'm looking at adding some basic email validation to check that the user has put in a correct email address. …

angular typescript validation angular-validation
Expected validator to return Promise or Observable

Im trying to do a custom validation on Angular 5 but I'm facing the following error Expected validator to return Promise …

javascript angular angular5 angular-forms angular-validation
Angular - Dynamically add/remove validators

I have a FormGroup defined like below: this.businessFormGroup: this.fb.group({ 'businessType': ['', Validators.required], 'description': ['', Validators.compose([…

angular angular-forms angular-validation
How to disable button in angular 7

I have an Angular7 app & using Reactive Forms Module for validation & forms. this is how my template looks …

angular angular7 angular-reactive-forms angular-validation
Angular2 Forms :Validations, ngControl, ngModel etc

Working on angular2 beta Forms. after alot of searching found nothing useful. hope here somebody help me. Basically i am …

angular forms validation angular-validation
Angular - assign custom validator to a FormGroup

I need to assign a custom validator to a FormGroup. I can do this at the time the FormGroup is …

javascript angular typescript angular-reactive-forms angular-validation
Angular form updateValueAndValidity of all children controls

In my Angular 4 app, I have a form with several controls. At some points I need to force the update …

angular typescript angular-reactive-forms angular-forms angular-validation
Best way to show error messages for angular reactive forms, one formcontrol multiple validation errors?

I am showing reactive form error messages as per the suggested approach of angular angular form validation error example. html …

angular angular-ng-if angular-validation